// This file is part of Substrate.

// Copyright (C) Parity Technologies (UK) Ltd.
// SPDX-License-Identifier: Apache-2.0

// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// 	http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

//! Tests that the `origin` syscall works.
//! The fixture returns the observed origin if the caller is not the origin,
//! otherwise call itself recursively and assert the returned origin to match.

#![no_std]
#![no_main]
include!("../panic_handler.rs");

use uapi::{HostFn, HostFnImpl as api};

#[no_mangle]
#[polkavm_derive::polkavm_export]
pub extern "C" fn deploy() {}

#[no_mangle]
#[polkavm_derive::polkavm_export]
pub extern "C" fn call() {
	let mut caller = [0; 20];
	api::caller(&mut caller);

	let mut origin = [0; 20];
	api::origin(&mut origin);

	if caller != origin {
		api::return_value(Default::default(), &origin);
	}

	let mut addr = [0u8; 20];
	api::address(&mut addr);

	let mut buf = [0u8; 20];
	api::call(
		uapi::CallFlags::ALLOW_REENTRY,
		&addr,
		u64::MAX,
		u64::MAX,
		&[u8::MAX; 32],
		&[0; 32],
		&[],
		Some(&mut &mut buf[..]),
	)
	.unwrap();

	assert_eq!(buf, origin);
}
